CarbonPrice_NPV_cat(ModelN,Scenario,Region,"Price_Carbon","%2",Unit)$(CarbonPrice_NPV(ModelN,Scenario,Region,"Emi_CO2","Mt CO2/yr")>%1 AND CarbonPrice_NPV(ModelN,Scenario,Region,"Emi_CO2","Mt CO2/yr")<%3)=CarbonPrice_NPV(ModelN,Scenario,Region,"Price_Carbon",Unit);
